SiKER 11.1V 65WH Laptop Battery for Dell Latitude E5440 E5540 N5YH9 WGCW6 1N9C0 F49WX 0M7T5F-12 Months Warranty Battery type:Li-ion Voltage:11.1V Capacity: 65WH Up to 600 recharge cycles over the life of the battery. Features 100% Brand Replacement New battery , with 1 year warranty